electron 2 4

Tag: "electron" at biology news

New law for resolution allows unprecedented sharpness in fluorescence microscopy

...xtbook knowledge was that a complicated and costly electron or scanning tunneling microscope would be required... small as 40-80 nm, a size previously reserved for electron microscopy. This may be of importance for the lithographic manufacturing of microchips. The reducti...

Variant prion protein causes infection but no symptoms

...ys and saw no signs of scrapie disease. Subsequent electron microscopic examinations at UCSD, however, confirmed that they produced amyloid fibrils, an abnormal form of prion protein, and that they even had brain lesions. More remarkably, according to Dr. Chesebro, the diseased brain tissue resembled that fou...

Bleach found to neutralize mold allergens

...lled the A. fumigatus spores. When viewed using an electron microscope, the treated fungal spores appeared smaller, and lacked the surface structures present on healthy spores. In addition, surface allergens were no longer detected by ELISA antibody-binding assays, suggesting that the spores were no longer a...

Genome Sequence for Haemophilus Influenzae Completed

...r of specially adapted underhairs. Using scanning electron microscopy and polarizing light microsopy, John W....k.) Weisel examined wolf prey hair with light and electron microscopy with the idea of accurately identifying wolf diet from wolf scat. "While we have engaged ...

Otter adaptations: How do otters remain sleek and warm

...r of specially adapted underhairs. Using scanning electron microscopy and polarizing light microsopy, John W....k.) Weisel examined wolf prey hair with light and electron microscopy with the idea of accurately identifying wolf diet from wolf scat. "While we have engaged ...

The synapse is a shotgun

... of synaptic function. The simulation combines 3-D electron microscope maps with computer simulation and physi...ve studies, Ellisman and his colleagues first used electron microscopic tomography -- the microscopist's equivalent of a CAT scan -- to create a detailed 3-D ma...

Spiders help scientists discover how muscles relax

...questions that could not be answered with existing electron microscopy techniques. Standard electron microscopy requires dehydration and staining of a tissue sample, which modifies the structure of the...

Researchers Discover That Microbes Can Produce Miniature Electrical Wires

...ery of its conductive pili it was unknown how this electron transfer might take place. The conductive pili that Geobacter produces may have a variety of applications for the electronics industry. Ultrafine wires, often referred to as nanowires, are required for further miniaturization of electronic devices. ...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...aid Banfield. "It's probably the first step in the electron transport chain associated with the metabolism of the organism." Interestingly, many of the proteins produced by the biofilm bacteria are responsible for maintaining correctly folded proteins and defending against free radicals, "suggesting that the...

The making and breaking of microtubules

...ure of tubulin in its stable, straight form, using electron crystallography methods, in which two-dimensional ...lin "flat" polymers were studied using cryo-EM and electron diffraction. By "docking" this crystallographic model within the structures they have now obtained ...

New Species of Coral Discovered Off Southern California

...infectious viruses continue to be generated. Using electron microscopy, Zentgraf’s team was able to show that appearance and shape of the virus particles thus created cannot be distinguished from normal HIV. By simultaneous production of GFP-extended and normal structure protein, PD Dr. Barbara Müller was abl...

Virologists make major step towards understanding the process of HIV infection

...infectious viruses continue to be generated. Using electron microscopy, Zentgraf’s team was able to show that appearance and shape of the virus particles thus created cannot be distinguished from normal HIV. By simultaneous production of GFP-extended and normal structure protein, PD Dr. Barbara Müller was abl...

Successful Test Of Single Molecule Switch Opens The Door To Biomolecular Electronics

...lating property of the molecule prevents the first electron from ever jumping on to the molecule, a kind of “Catch-22.?Ions in the solution “jiggle?the molecule enough to bring about an unusual configuration of the molecule that does allow the electrons from the electrodes to jump on to the molecule, a proces...

Conserved amino acids play both structural and mechanistic roles in sandwich-like protein

...d azurin ?a copper-containing protein essential to electron transfer. Azurin is part of a group of proteins that fold into a sandwich-like structure consisting of two sheets of amino acids meshed together. Nearly 70 superfamilies of proteins of varying makeup have this sandwich-like structure, but they all ha...

Liposome finding implies electrical effect on cell development

...). In images achieved through optical and scanning electron microscopy, microtubules were observed to immediately form and extend from the phospholipid balloon, like a seed putting forth a stalk or root. Hayes believes that the phenomena may have significant implications for both cellular biology and for nan...

Great White shark evolution debate involves WSU Lake Campus geology professor

... a sophisticated computer program. He even uses an electron microscope to view different serration designs of shark teeth. "Our analysis of their teeth shows that Great White and mako sharks have very similar tooth growth trajectories, while those of the great white and megladon are not similar. Analysis of ...

Family trees of ancient bacteria reveal evolutionary moves

...ve of heat), motility and the use of sulfide as an electron donor. "We will need lots of analyses of the micro-fossil record by serious paleobiologists to see how sound this hypothesis is," Blank said. "This time frame is one of the biggest puzzles for biologists and geologists alike. A huge amount of things...

Scientists discover unique microbe in California's largest lake

... lab, worked with Selker, formerdirector of the UO electron microscopy facility, to compare thecellular structure of the new organism with that of the symbiotic formof Acaryochloris. Blankenship and Olson compared its pigments withthose of A. marina, one of the symbiotic species."Chlorophyll d is a pigment th...

Key molecule in plant photo-protection identified

...eveloped bumps andswellings."If you look under the electron microscope at these swellings, they arefilled with abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Normally any given segment of anerve cell branch would have only very small amounts of theseorganelles."...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...eveloped bumps andswellings."If you look under the electron microscope at these swellings, they arefilled with abnormal amounts of different types of cellular parts knownas organelles," Holtzman explains. "Normally any given segment of anerve cell branch would have only very small amounts of theseorganelles."...

1 2 3 4 5